The invention discloses a virtual reality training system and a method capable of being used for ray DR imaging detection in order to obtain programmed motion of the ray DR imaging detection technology, and the invention can be used for teaching purposes and professional purposes. The system includes radiation detection environment scene, basic equipment for radiation detection, radiation detection workpiece, equipment function design and implementation, intersection of ray and workpiece, projection image calculation, virtual reality training system integration and VR glasses. The engineeringfiles of VR glasses are imported into Unity file, and the real experience and interaction are carried out by wearing VR glasses. The invention also provides a virtual reality training method which canbe used for ray DR imaging detection. Compared with the traditional simulation software, the detection personnel can participate in each link of the detection process through the VR glasses, as if experiencing the circumstance personally, so as to achieve better simulation practice operation training effect.